id:A122903 - OEIS Search Results

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Numbers n such that in Z/nZ the number of squares is equal to the number of invertible elements.

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5

1, 3, 4, 12, 70, 90, 210 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`n such that A000224(n) = A000010(n)`
	CROSSREFS	`Cf. A122904, A122905, A122906, A122907.` `Sequence in context: A101716 A109771 A052626 this_sequence A059792 A018930 A127689` `Adjacent sequences: A122900 A122901 A122902 this_sequence A122904 A122905 A122906`
	KEYWORD	`fini,full,nonn`
	AUTHOR	`Max Alekseyev (maxale(AT)gmail.com), Sep 18 2006`

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.